I came across the same problem but i solved it like this and it worked for me, i don't know if it will help you: {     "customer": {       "id": "10000",       "order": "some-customer-order-nbr"     },     "type": "SO",     "description": "sample request order",     "status": "Hold",     "orderLines": [         {             "inventoryId": "101010",             "quantity": 3,             "unitPrice": 100,             "subaccount": {               "1": "0",               "2": "00"            }         }     ] }   ... View more